Proceedings of the International Display Workshops Volume 31 (IDW '24)
Dec 4 - Dec 6, 2024Sapporo Convention Center
Proceedings of the International Display Workshops Volume 31 (IDW '24)
Dec 4 - Dec 6, 2024Sapporo Convention Center
[ISTp1-5L]Embedded a-Si Photo-Transistor Sensors Integration in Remote Optical Touch-Input Panel Using Four-Mask Process Architecture Technology
*Fengyun Yang1, An-Thung Cho1, Yong Zhang1, Ming-liang Wang1, James Hsu1, Wade Chen1(1. Chuzhou HKC Optoelectronics Technology Co.Ltd. (China))
Keywords:
Optical-input sensor,image sensor,a-Si phototransistor
An optical type touch-input flat panel is designed. The driving system is based on the passive pixel sensor array with amorphous silicon TFT technology. The embedded sensing structure of the optical sensor is using the a-Si TFT phototransistor and four-mask process architecture technology. This paper presents a primary optical pixel sensor circuit that utilizes hydrogenated amorphous silicon photo-transistor sensor.